<%@ page language="java" contentType="text/html; charset=utf-8"
	pageEncoding="utf-8"%>
	<%
   if(request.getSession().getAttribute("user")==null){
	   request.getRequestDispatcher("login.jsp").forward(request, response);
   }

%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" href="css/main.css" />
<script>
			function open_page(a){
				window.open(a,"content","",true);
			}
		</script>
</head>
<body class="left_bg">
	<div class="blank"></div>
	<ul>
		<li id="add_student" onclick="open_page('student_info.jsp')">管理学生</li>
		<li id="add_student" onclick="open_page('class_info.jsp')">管理班级</li>
		<li id="add_student" onclick="open_page('score_info.jsp')">管理成绩</li>
		<li id="add_student" onclick="open_page('course_info.jsp')">管理课程</li>
	</ul>
</body>
</html>
